Car-axle.



S. T. PYEATT.

. CAR AXLE PPPPPPPPPPPPPPPPPPPPPPPPP o.

96;),399, Patented June 7,1910.

on TE sens 1 TCE.

Patented June *7, 1910.

Serial No. 542,242.

CAR-AXLE.

960,399. Specification of Letters Patent.

Application filed February 5, 1910.

To all whom it may concern:

described, delineated Be it known that I, SAMUEL T. PYEATT, a citizen of the United States, residing at Ganehill, in the county of Washington and State of Arkansas, have invented a new and useful Car-Axle, of which the following is a specification.

It is the object of this invention, to provide an axle for cars, consisting of separate sections, rotatably united at their adjacent ends, so that the wheel which is upon the extremity of one axle section may rotate independently of the wheel which is on the other axle section, a construction tending to obviate the flattening of the wheel, when one wheel, moving upon the outer rail of a curved track, must traverse a greater distance than the other wheel, moving upon the inner rail of the curved track.

Another object of the invention is so to construct the device, that one axle section, will, at its end, inclose, for rotation, the end of the other axle section, so that the inclosed axle section will bear peripherally, against the outer axle section, and not against some subsidiary portion of the structure.

Another object of the invention is so to construct the device that the extremity of one axle section may be securely held in place, for rotation, within the other axle section.

Another object of the invention is to regulate and control the lubrication of the parts of the structure.

With the above and other objects in view, the invention consists in the novel construction and arrangement of parts hereinafter in the drawings, and specifically claimed, it being understood that, within the scope of what is claimed, changes may be made, without departing from the spirit of the invention.

Similar numerals of reference are em ployed to denote corresponding parts throughout the several figures of the drawings.

In the accompanying drawings,Figure 1 is a longitudinal section of the structure, parts being shown in elevation; Fig. 2 is a transverse section of Fig. 1, upon the line A-B, looking in the direction of the arrows; and Fig. 3 is a fragmental perspective of the cap, whereby one-of the axle sections is held for rotation within the contour of the other axle section.

The axle forming the subject matter of this application, consists of two separate sections, which, for convenience, will hereinafter be referred to as the primary section and the secondary section, the primary section being denoted in the drawings, by the numeral 1, and the secondary section being there denoted by the numeral 2. The axle sections 1 and 2 are provided, at their adjacent ends, respectively, with enlarged heads 3 and 4, there being in the head 3 of the primary section 1, an opening 5 which is adapted to house entirely, for rotation, the head 4 of the secondary axle section 2. A cap 6 is shown, the same, upon its inner wall, being threaded, as shown at 7. This threaded portion 7 of the cap is adapted to engage the threaded exterior of the head 3, and, at one end, the cap 6 is provided with a flange 8 which is adapted to overhang the head 3 of the primary section 1, and like- Wise to overhang the head 4 of the secondary section 2. This flange 8 of the cap, is open axially, to provide for the passage of the secondary axle section 2, the opening in the cap being surrounded by an annular, inwardly extended lip 9, of substantially the same diameter as the head 4, and consequently of less diameter than the opening 5 in the head 3. A washer 10 is introduced between the lip 9 and the head 4, the washer surrounding the axle section 2 closely, and bein of substantially the same diameter as the 11p 9, so that the washer may, if necessary, move, under the actuation of cap 6, within the contour of the opening 5. The washer 10 serves to space the cap 6 apart from the head 3, to define between the cap and the head 3, an oil chamber 11, which, as shown most clearly in Figs. 1 and 3, is peripherally extended into the cap 6, as denoted by the numeral 12, beyond the periphery of the head 3. In the outer, lateral, vertical face of the head 3, and located relatively near to the axle section 1, there is an oil duct 14 communicating with the opening 5. This oil duct 14 may be closed by means of a screw plug 15, or the like. There is a radialopening in the cap 6, denoted by the numeral 16, and threaded to receive a set screw 17 adapted at its inner end, to bear against the periphery of the head 3, whereby the cap 6 be secured in place *upon the head 3, against accidental displacement. A plu:

wrench, whereby the cap 6 may be adjusted upon the head 3.

In practical operation, the head 4 will rotate in the opening axle sections 1 and 2 rotatable, so :that the wheels which are located at the ends of the sections. -1.-a-nd 2 may traverse the inner and router rails of a curved track, without compelling the outer wheels to slide as the'car is rounding the curve.

The washer l0 obviously tends to take up a portion of the wear in the .structure, the cap 6 being. readily rotatable to adjust the head 4 within the head 3, the set .screw '17 constituting a means for holding the cap '6 in :any positionwhich it may assume. Owing to the fact that the c p 6 :is provided with the inwardly extending lip 9, which said lip, together withv the washer 10., are of. less diameter than the [opening 5, the head 4 may readily be adjusted within the open- 5 of the head 3, the

Thus, after the head 4 has been worn away to such a degree that .it no :longer fills the opening 5,. the lip 9 and the washer 10, .ex-

' tending into the opening 5., wiJi be effective to prevent the axle sections 1 and 2' from having 'inore than the necessarylongitudinal lay. p When oil is introduced into the oilfduct 14, the bearing faces of the heads?) and 4 will be thoroughly lubricated. .A'ny excess of oil :being housed within he extended :portion 12 of the oil chamber 11, it being seen that, from this extended portion 12, the oil cannot readily leak away, along the line of and the cap 6;

union 19 between the head 3 then the axle .sections :are .in rotation, the oil, will, by its inertia, retire into the chain ber 11. from which it will gradually ieak away, between the washer 1-0 :and the parts of the device between which the washer is inclosed.

It should'be noted that the axle sections 1 and. 2 terminate in enlarged heads. 'By thus enlarging the ends of the axle sections, a relatively large bearing surface is provided. It should also -be noted that the head 4 is housed entirely within theperiphery of the head 3, so that the heads, .at :their peripheries, bear against eachother for rota-' tion, and not against some subsidiary porbeing thus separately 5 within the cap 3, without the cap 6 coming in contact with the end of head the cap 6 receiving no portion of the wear incident to the rotation of the one head within the other. 7

Having thus described the invention, what is claimed is 1. An axle for cars,

is terminally enlarged to form a head, there being an opening in the head of the primary section arranged to inclose entirely, for rotation, the head of the secondary section; a cap adjustably held upon the exterior of the head of the primary section and having a .fiange to overhang the head of the secondary-section, there'being an annular, inwardly extending lip upon the flange, of substantially the same diameter. as the head of the secondary section. Y

2. An'axle for cars, consisting of axle sections having enlarged heads, one of which is hollow to house the other head entirely, for rotation; a cap threaded .to engage the hollow head and having an inwardly'ex tended lip of substantially the same diameter as the .housedhead; a washer of substantially the same diameter as the lip, interposed between the lip and the housed head and arranged to space the cap from thehollow head to define an oil chamber'periph' eral-ly extended into-the cap beyond thehollow' head; there being an oil duct; in the lateral face of the hollow head adjacent, the axle .section thereof.

3.. An axle for-cars, consisting of a ;primaryiand a secondary section, each of which is terminally enlarged to" form .a head there being an opening in the head of the primary section arranged to inclose entirely, for rotation, the head of the secondary'section; a

consisting of a pri mary and a secondary section, each of which cap threaded .to engage the-exterior of the head of the ,primaryjsection andhaving .a flange to overhang the head of the secondary section, there being an annular, inwardly extending lip upon the flange, of less diameter than the opening; .a washer of less diameter than the opening, located between the lip and the head of the'secondary section and arranged to engage the head of the secondary section; there being .an oil duct in the lateral face of the head of the primary, section, communicating with the opening, adjacent the primary section; the engagement between "the lip and the washer defining a chamber between the .cap and the head, of the primary section; the chamber being extended into-cap beyond the head of the primary section. y r

Intestimony that I'claim the foregoing as my own, I have heretoiafiixed' my'sign'a ture in the presence of two witnesses.

"SAMUEL-THOMAS PYEATT. Witnesses:

' BRUCE HoLcoMB, ART T. Lewis. 

